Improvement in hydrants



o. GARR.

No. 208,072. Patented Sept. 17, 187s.

VVih-VEESES.V

NZZ' 5 MPETERS, PHOTO-LITHDGRAPHER. WAsmNGYDN. D C.

UNITED STATES tjinTnlvT GFF-ICE.

GHARLES CARR, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN HYDRANTS.

Specification forming part of Letters Patent No. 208,072,Y datedSeptember 17, 18785 application filed March 29, 187e.

To all 'whom it 'may concern:

Be it known that I, CHARLES CARR, of Boston, Suffolk county, State ofMassachusetts, have invented an Improvement in Hydrants, of which thefollowing is a specification:

This invention relates to improvements in hydrants; and consistsprimarily in the combination, in a hydrant, of a main valve operatedagainst the pressure of the water and seated in the base of the stock, awaste-valve operated by the main valve, and a supplemental valveoperated in a chamber below the main valve and coactively therewith;also in the combination, with a hydrant-stock, valverod, and cross-bar,having ends of different thickness, of a guide independent of the stock,

whereby the valve-rod is more accurately centered and held in properposition than is the case when the cross-bar is guided by projections onthe stock 5 also in a pivoted supplemental valve of less specic gravitythan water, to operate substantially as hereinafter described. In this,my hydrant, the main valve is made to close against the outiiow ofwater, in order that the valvel may come to its seat without shock,whichis the case with valves closing with the iiow of water, especiallywhen the valve-rod-operating parts or the nut or screw becomes worn inuse.

Figure 1 represents, in vertical section, a hydrant embodying myinvention; Fig. 2, a detail and section on lines a: w of the valverodand guide; Fig. 3, an enlarged detail of the waste-valves. Figs. 4 and 5are modifications, showing different arrangements of supplementaryvalves; and Fig. 6 is a section of Fig. l on. the lines y y.

The frost-jacket a, hydrantstock b, outlet b', top c, and base or pot d,with its inlet e, may lbe of any usual construction. The valverod j' isprovided at its upper end with a screw-thread, g, which enters a tubularnut,

h, having a wrench-receiving portion, t, of usual construction, so thatby turning' the nut the valve-rod may be raised or lowered to lift thedisk-valve j from or force it down into its seat m, such seat beingformed as an integral portion of the hydrant-stock b. Generally thisseat is formed in an independent plate, placed between the stock andbase, where it is confined by bolts, thereby making two joints to bepacked, whereas in my construction there is but one joint Vbetween thebase and stock. This seat, in practice, will have a composition lining,Z, firmly secured therein watertight, (see'Fig. 5,) either by expansionor otherwise.

In the same casting forming the seat for the main valve, I make anopening for the wastewater to flow from the stock, and place preferablytherein a composition tube, k, having at its top a tilting waste-valve,n, suitably weighted to close the tube when not positively lifted by theprojection 2 on the main valve as it is forced down to its seat, suchwaste-valve permitting the water in the stock to iow out of it above themain valve to obviate freezing.

It will be noticed by this construction that I am enabled tov place thewaste-valve very low down, which is a matter of great moment to preventfreezing.

The valve-rod has attached to it in any suitable manner a cross-bar, p,having its opposite ends 3 4 unlike, or of different width, said endsentering slots in a guide, r, projected downward from-the cover-plate s,held to the stock b by suitable screws. The ends of the crossbar beingof different widths insures that the valve-rod and its attached valve bealways placed within the stock in such a position as to operate thewaste-valve, and the valve-rod being steadied by this centrally-locatedlguide linsures themore accurate centering and'guiding of the valve-rodthan would be the case if the guides were fixed to the stock. Theprojecting guides t (see Fig. 6) direct the diskvalve in a right line tothe seat.

vThe lower end of the valve-rod has attached to it a long nut, it beingof such length as to keep the supplemental valve w at such properdistance from the main valve j as will permit the passage of the waterupward through the main-valve opening when the main valve is lifted, theadjustable screws 5 5 determining the distance which the main valve maybe lifted from its seat when Water is being drawn from vthe outlet b.

The supplemental valve w (see Figs. l and 5) is shown as placed upon anarm, 7, pivoted at 8 to the base. Such valve is preferably made of lightwood, or cork, or thin metal, or

glass, preferably covered with india-rubber, vulcanized or otherwise,the valve being in all instances constructed of such material as to makeit of less specific gravity than water, so that the supplemental valvewill always come up into and close the passage to the under side ofthemain-valve seat when the main valve is withdrawn for repairs,notwithstanding the pressure of water may be slight or the flow slow,which would not be the case if the valve fw was heavier than water.

By pivoting the valve w as shown,it is made to swing on a center, andmove in the midst of the strongest and most direct portion of thecurrent of Water, and is consequently directed to its seat.

If desired, the valve fw may be made more buoyant by the use of acounterbalancingweight, 10. lIlhis valve fw might be left loose in thewater in the base, as shown in Fig. et 5 but the construction shown inFig. lis preferred.

When it is desired to remove the main valve or valverod from the stock bthe screws 5 5 are withdrawn, so that the main valve can be raised farenough to permit the supplemental valve w to close the opening at theunder side of the main-valve seat, and then the coverplate s is detachedand removed, and with it the valve-rod, valve, and guide.

I claiml. The combinatioinin ahydrant, ofthe main valve seated at thebase of the stock, a wastevalve operated thereby, and a supplementalvalve of less specic gravity than water located below the main valve andcoactin g therewith, and the chamber d, .in which said supplementalvalve is arranged, substantially as described.

2. In a hydrant, the combination, with the base, of a pivotedsupplemental valve of less specific gravity than water, to close themain valve opening when the main valve is raised, substantially asdescribed.

3. The combination, with the valve-rod and guide, of a cross-bar havingends 3 4 of different thicknesses, substantially as and for the purposesdescribed.

4:. The valve-rod and cross-bar, in combination with the screws 5 5, tooperate substantially as described.

In testimony whereof I have signed 1n y name to this specification inthe presence of two subscribing witnesses.

CHARLES CARR.

VVituesses G. NV. GREGORY, N. E. C. WHITNEY.

